Ivanov Т. С. DISTANCE LEARNING: ESSENCE AND PROBLEMS. Actual Problems in the System of Education: General Secondary Education Institution – Pre-University Training – Higher Education Institution, [S. l.], v. 1, n. 1, p. 140–142, 2021. DOI: 10.18372/2786-5487.1.15848. Disponível em: https://jrnl.nau.edu.ua/index.php/APSE/article/view/15848. Acesso em: 29 sep. 2022.